Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
su sach » so sach, vu sach
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cac xuc » cam xuc, chat xuc, cac cuoc
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (thu sach)) ky tang xa hoi. hieu va ((cac xuc) or (cac nuoc)) va tinh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (thu sach)) ky tang xa hoi. hieu va ((cac xuc) OR (cac nuoc)) va tinh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (thu sach)) ky tang xa hoi. hieu va ((cac xuc) or (cac nuoc)) va tinh vi cua tu*.